Question juridique clé
Whether the rent increase notice was void because it was not issued on a canton-approved form
Solution extraite
No. The form remained approved despite the landlord's company name and logo changes because the underlying legal entity and the formal content required by law were unchanged.
Motifs extraits
The court held that the judge only established the factual question whether the used form corresponded to an approved one. Minor changes to the individualized part of the form, such as a company name update or address adjustment, did not require renewed approval if the tenant still received the information in the statutorily prescribed, approved format.